Which type of dish is described as round and deep?

A dish that is described as round and deep is best characterized as a bowl. Bowls are typically designed with a rounded shape and significant depth, allowing them to hold liquids and larger portions of food. This makes them ideal for serving soups, stews, salads, and various other dishes that require containment without spilling over.

In contrast, a plate is primarily flat and shallow, designed for serving solid foods rather than liquids. A tray is generally flat with raised edges but lacks significant depth to hold food items securely. A cup, while round and often deep, is specifically designed for beverages and typically has a handle, making it distinct from the broader category of dishes like bowls. Thus, the characteristics of a bowl align perfectly with the description provided.